XM-RM671 is 4 Ports 100 Mbps POF Ethernet Test Module with high test quality and reliable test result. POF interface is an inexpensive solution when it compare with glass fiber that has expensive total cost. The distance for transmission is up to 100 meter with no generation of electromagnetic radiation and also free of electromagnetic interference, crosstalk and noise. Request of high-speed and low cost home networking is possible by POF.